In Chapter 7, we introduced the true-amplitude Kirchhoff migration integral, which is the first of the two building blocks of the unified approach to seismic-reflection imaging. The second building block is the true-amplitude Kirchhoff demigration integral, which is introduced in Chapter 9. In this chapter, we further elaborate on the properties of Kirchhoff migration. However, all aspects of Kirchhoff migration that are needed to understand the general imaging theory were discussed in Chapter 7. Thus, readers whose main interest is with the unified approach to seismic-reflection imaging may go directly to Chapter 9.

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